We have observed high-contrast matter wave interference between 30 Bose-Einstein condensates with uncorrelated phases. Interference patterns were observed after independent condensates were released from a one-dimensional optical lattice and allowed to expand and overlap. This initially surprising phenomenon is explained with a simple theoretical model which generalizes the analysis of the interference of two independent condensates.
@article{arxiv.quant-ph/0405113,
title = {Interference of an array of independent Bose-Einstein condensates},
author = {Zoran Hadzibabic and Sabine Stock and Baptiste Battelier and Vincent Bretin and Jean Dalibard},
journal= {arXiv preprint arXiv:quant-ph/0405113},
year = {2007}
}